Method and apparatus for monitoring signals in a wireless communication system - Patents.com

Abstract

The method and apparatus for monitoring signals in a wireless communication system according to the present invention performs multi-slot PDCCH monitoring at 480 kHz or 960 kHz SCS. Multi-slot PDCCH monitoring refers to PDCCH monitoring that is set to include a slot interval between PDCCH monitoring opportunities, since monitoring PDCCHs in consecutive slots places a heavy burden on a terminal.

Description

[Technical field]

[0001] The present invention relates to a method and apparatus for use in a wireless communication system. [Background technology]

[0002] Wireless communication systems have been widely deployed to provide various communication services such as voice and data. In general, wireless communication systems are multiple access systems that can support communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.). Examples of multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, etc. Summary of the Invention [Problem to be solved by the invention]

[0003] An object of the present invention is to provide a signal monitoring method and an apparatus therefor for efficiently monitoring a control signal in a wireless communication system.

[0004] The technical object of the present invention is not limited to the above-mentioned technical object, and other technical objects can be inferred from the embodiments of the present invention. [Means for solving the problem]

[0005] The present invention provides a method and apparatus for signal monitoring in a wireless communication system.

[0006] In one embodiment of the present invention, there is provided a method for a terminal to monitor a control signal in a wireless communication system, the method comprising: setting an SS / PBCH (synchronization signals and physical broadcast channel) block and a CORESET (control resource set) multiplexing pattern to pattern 1; and monitoring a PDCCH within a type 0 PDCCH (physical downlink control channel) CSS (common search space) set on two slots based on the pattern 1; wherein a slot interval between the two slots is 4 slots based on a 480 kHz SCS (subcarrier spacing) and 8 slots based on a 960 kHz SCS.

[0007] In other embodiments of the present invention, an apparatus, processor and storage medium are provided for performing the signal monitoring method.

[0008] The communication device includes at least a terminal, a network, and an autonomous vehicle capable of communicating with other autonomous vehicles other than the communication device.

[0009] The above-described aspects of the present invention are merely some of the preferred embodiments of the present invention, and various embodiments reflecting the technical features of the present invention will be understood and derived by those having ordinary skill in the art based on the detailed description of the present invention described below. Effect of the Invention

[0010] According to an embodiment of the present invention, when a control signal is monitored between communication devices, there is an advantage that more efficient signal monitoring can be performed due to an operation differentiated from the conventional invention.

[0011] The technical effects of the present invention are not limited to the above-mentioned technical effects, and other technical effects may be inferred from the embodiments of the present invention. [Brief description of the drawings]

[0012] [Figure 1] 1 shows an example of a structure of a radio frame. [Diagram 2] 1 shows an example of a resource grid of slots. [Diagram 3] 1 shows an example of mapping physical channels into slots. [Figure 4-7] A method for transmitting and receiving signals according to an embodiment of the present invention will now be described. [Figure 8-11] 1 illustrates an example of an apparatus according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The following technologies can be used for various wireless access systems such as CDMA, FDMA, TDMA, OFDMA, SC-FDMA, etc. CDMA can be implemented by radio technologies such as Universal Terrestrial Radio Access (UTRA) and CDMA2000. TDMA can be implemented by radio technologies such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented by radio technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA), etc. UTRA is part of the Universal Mobile Telecommunications System (UMTS). 3GPP (3rd Generation Partnership Project: registered trademark) LTE (long term evolution) is a part of E-UMTS (Evolved UMTS) that uses E-UTRA, and LTE-A / LTE-A pro is an evolved version of 3GPP LTE. 3GPP NR (New Radio or New Radio Access Technology) is an evolved version of 3GPP LTE / LTE-A / LTE-A pro.

[0014] For a clearer explanation, the present invention will be described based on a 3GPP communication system (e.g., LTE, NR), but the technical idea of ​​the present invention is not limited thereto. LTE refers to technology after 3GPP TS 36.xxx Release 8. In particular, LTE technology after 3GPP TS 36.xxx Release 10 is called LTE-A, and LTE technology after 3GPP TS 36.xxx Release 13 is called LTE-A pro. 3GPP NR refers to technology after TS 38.xxx Release 15. LTE / NR can also be called a 3GPP system. "xxx" refers to the detailed number of the standard document. LTE / NR is collectively called a 3GPP system. For background technology, terms, abbreviations, etc. used in the description of the present invention, please refer to the matters described in the standard documents published before the present invention. For example, the following documents can be referred to.

[0015] 3GPP NR

[0016] - 38.211: Physical channels and modulation

[0017] - 38.212: Multiplexing and channel coding

[0018] - 38.213: Physical layer procedures for control

[0019] - 38.214: Physical layer procedures for data

[0020] - 38.300: NR and NG-RAN Overall Description

[0021] - 38.331: Radio Resource Control (RRC) protocol specification

[0022] FIG. 1 shows an example of a radio frame structure used in NR.

[0023] In NR, uplink (UL) and downlink (DL) transmissions are composed of frames. A radio frame has a length of 10 ms and is defined as two 5 ms half-frames (Half-Frame, HF). A half-frame is defined as five 1 ms subframes (Subframe, SF). A subframe is divided into one or more slots, and the number of slots in a subframe depends on the Subcarrier Spacing (SCS). Each slot contains 12 or 14 OFDM(A) symbols depending on the cyclic prefix (CP). If a general CP is used, each slot contains 14 symbols. If an extended CP is used, each slot contains 12 symbols. Here, the symbols can include OFDM symbols (or CP-OFDM symbols), SC-FDMA symbols (or DFT-s-OFDM symbols).

[0024] Table 1 illustrates that when a general CP is used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe change depending on the SCS.

[0025] [Table 1]

[0026] Table 2 illustrates that the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary with the SCS when an extended CP is used.

[0027] [Table 2]

[0028] In the NR system, OFDM(A) neurology (e.g., SCS, CP length, etc.) is set to be different among multiple cells merged to one terminal (User Equipment; UE), so that the (absolute time) duration of time resources (e.g., SF, slot, or TTI) (collectively referred to as TU (Time Unit) for convenience) consisting of the same number of symbols is different among the merged cells.

[0029] NR supports multiple Orthogonal Frequency Division Multiplexing (OFDM) neurologies (e.g., subcarrier spacing, SCS) to support various 5G services. For example, a 15kHz SCS supports wide areas in traditional cellular bands, while a 30kHz / 60kHz SCS supports dense urban areas, lower latency, and wider carrier bandwidth.

[0030] The NR frequency band is defined by two types of frequency ranges (FR) (FR1 / FR2). FR1 / FR2 are configured as shown in Table 3 below. FR2 also stands for millimeter wave (mmW).

[0031] [Table 3]

[0032] Figure 2 shows an example of a slot structure of an NR frame.

[0033] A slot includes multiple symbols in the time domain. For example, in the case of the general CP, one slot includes 14 symbols, while in the case of the extended CP, one slot includes 12 symbols. A carrier includes multiple subcarriers in the frequency domain. An RB (Resource Block) is defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. In the frequency domain, multiple RB interlaces (or simply, interlaces) are defined. An interlace m ∈ {0, 1, ..., M-1} is composed of (common) RBs {m, M+m, 2M+m, 3M+m, ...}. M indicates the number of interlaces. A BWP (Bandwidth Part) is defined as multiple consecutive RBs (e.g., physical RBs, PRBs) in the frequency domain, and can correspond to one OFDM numerology (e.g., SCS(u), CP length, etc.). A carrier includes up to N (e.g., 5) BWPs. Data communication is performed in the activated BWP, and only one BWP is activated for one terminal in one cell / carrier. Each element in the resource grid is called a resource element (RE), and one modulation symbol can be mapped to it.

[0034] In a wireless communication system, a terminal receives information from a base station via a downlink (DL), and the terminal transmits information to the base station via an uplink (UL). Information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels / signals exist depending on the type / use of the information transmitted and received. A physical channel corresponds to a set of resource elements (RE) that carry information derived from a higher layer. A physical signal corresponds to a set of resource elements (RE) used by a physical layer (PHY), but does not carry information derived from a higher layer. The higher layers include a medium access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, a radio resource control (RRC) layer, etc.

[0035] DL physical channels include PBCH (Physical Broadcast channel), PDSCH (Physical Downlink Shared channel) and PDCCH (Physical Downlink Control channel). DL physical signals include DL RS (Reference Signal), PSS (Primary synchronization signal) and SSS (Secondary synchronization signal). DL RS include DM-RS (Demodulation RS), PT-RS (Phase-tracking RS) and CSI-RS (Channel-state information RS). UL physical channels include PRACH (Physical Random Access Channel), PUSCH (Physical Uplink Shared Channel) and PUCCH (Physical Uplink Control Channel). UL physical signals include UL RS. UL RS include DM-RS, PT-RS and SRS (Sounding RS).

[0036] FIG. 3 shows an example of mapping physical channels within a slot.

[0037] A DL control channel, DL or UL data, and UL control channel are all included in one slot. For example, the first N symbols in a slot are used to transmit the DL control channel (hereinafter, DL control region), and the last M symbols in a slot are used to transmit the UL control channel (hereinafter, UL control region). N and M are integers equal to or greater than 0. The resource region between the DL control region and the UL control region (hereinafter, data region) is used to transmit DL data or UL data. There is a time gap between the control region and the data region for DL-to-UL or UL-to-DL switching. The PDCCH is transmitted in the DL control region, and the PDSCH is transmitted in the DL data region. Some symbols at the time of switching from DL to UL in a slot are used as the time gap.

[0038] The base station of the present invention is, for example, a gNodeB.

[0039] Downlink (DL) physical channels / signals

[0040] (1) PDSCH

[0041] The PDSCH carries downlink data (e.g., DL-shared channel transport block, DL-SCH TB). The TB is encoded into a codeword (CW) and then transmitted through a process of scrambling and modulation. The CW includes one or more code blocks (CB). One or more CBs are collected into one CBG (CB group). Depending on the cell configuration, the PDSCH can carry up to two CWs. Scrambling and modulation are performed for each CW, and the modulation symbols generated from each CW are mapped to one or more layers. Each layer is precoded, mapped to resources together with the DMRS, and transmitted from the corresponding antenna port. The PDSCH is dynamically scheduled by the PDCCH (dynamic scheduling) or semi-statically scheduled (Configured Scheduling, CS) based on higher layer (e.g., RRC) signaling (and / or Layer 1 (L1) signaling (e.g., PDCCH)). Thus, in dynamic scheduling, PDSCH transmission is accompanied by a PDCCH, whereas in CS, PDSCH transmission is not accompanied by a PDCCH. CS includes semi-persistent scheduling (SPS).

[0042] (2) PDCCH

[0043] The PDCCH carries Downlink Control Information (DCI). For example, the PCCCH (i.e., DCI) carries the transmission format and resource allocation of DL-SCH, frequency / time resource allocation information for UL-SCH (shared channel), paging information for PCH (paging channel), system information on DL-SCH, frequency / time resource allocation information for higher layer control messages such as voluntary access response (RAR) transmitted on PDSCH, transmission power control command, and information on activation / deactivation of SPS / CS (Configured Scheduling), etc. Various DCI formats are provided depending on the information in the DCI.

[0044] Table 4 illustrates an example of a DCI format transmitted via the PDCCH.

[0045] [Table 4]

[0046] DCI format 0_0 is used to schedule TB-based (or TB-level) PUSCH, and DCI format 0_1 ​​is used to schedule TB-based (or TB-level) PUSCH or CBG (Code Block Group)-based (or CBG-level) PUSCH. DCI format 1_0 is used to schedule TB-based (or TB-level) PDSCH, and DCI format 1_1 is used to schedule TB-based (or TB-level) PDSCH or CBG-based (or CBG-level) PDSCH (DL grant DCI). DCI format 0_0 / 0_1 is referred to as UL grant DCI or UL scheduling information, and DCI format 1_0 / 1_1 is referred to as DL grant DCI or UL scheduling information. DCI format 2_0 is used to deliver dynamic slot format information (e.g., dynamic SFI) to the terminal, and DCI format 2_1 is used to deliver downlink pre-Emption information to the terminal. DCI format 2_0 and / or DCI format 2_1 are transmitted to terminals in a corresponding group via a group common PDCCH, which is a PDCCH transmitted to terminals defined as one group.

[0047] The PDCCH / DCI includes a cyclic redundancy check (CRC), and the CRC is masked / scrambled to various identifiers (e.g., Radio Network Temporary Identifier, RNTI) depending on the owner or use of the PDCCH. For example, if the PDCCH is for a specific terminal, the CRC is masked to Cell-RNTI (C-RNTI). If the PDCCH is related to paging, the CRC is masked to P-RNTI (Paging-RNTI). If the PDCCH is related to system information (e.g., System Information Block, SIB), the CRC is masked to System Information RNTI (SI-RNTI). If the PDCCH is related to an unsolicited access response, the CRC is masked to Random Access-RNTI (RA-RNTI).

[0048] Table 5 shows an example of the use of PDCCH according to RNTI and the transmission channel. The transmission channel indicates the transmission channel related to the data carried by the PDSCH / PUSCH scheduled by the PDCCH.

[0049] [Table 5]

[0050] The modulation method of the PDCCH is fixed (e.g., Quadrature Phase Shift Keying, QPSK), and one PDCCH is composed of 1, 2, 4, 8, or 16 CCEs (Control Channel Elements) depending on the AL (Aggregation Level). One CCE is composed of six REGs (Resource Element Groups). One REG is defined by one OFDM symbol and one (P)RB.

[0051] PDCCH is transmitted in a CORESET (Control Resource Set). CORESET corresponds to a physical resource / parameter set used to carry PDCCH / DCI in BWP. For example, CORESET includes a REG set having a predetermined neurology (e.g., SCS, CP length, etc.). CORESET is configured by system information (e.g., MIB) or UE-specific higher layer (e.g., RRC) signaling. Examples of parameters / information used to configure CORESET are as follows: One or more CORESETs are configured for one UE, and multiple CORESETs are superimposed in the time / frequency domain.

[0052] - controlResourceSetId: Indicates the identification information (ID) of the CORESET.

[0053] - frequencyDomainResources: Indicates the frequency domain resources of the CORESET. It is indicated by a bitmap, where each bit corresponds to an RB group (= 6 consecutive RBs). For example, the most significant bit (MSB) of the bitmap corresponds to the first RB group in the BWP. The RB group corresponding to the bit whose bit value is 1 is assigned to the frequency domain resources of the CORESET.

[0054] - duration: indicates the time domain resource of CORESET. It indicates the number of consecutive OFDMA symbols that compose CORESET. For example, duration has a value of 1 to 3.

[0055] - cce-REG-MappingType: indicates the CCE-to-REG mapping type. Interleaved and non-interleaved types are supported.

[0056] - precoderGranularity: indicates the precoder granularity in the frequency domain.

[0057] - tci-StateSPDCCH: Indicates information (e.g., TCI-StateID) indicating the TCI (Transmission Configuration Indication) state for the PDCCH. The TCI state is used to provide a Quasi-Co-Location (QCL) relationship between DL RSs and PDCCH DMRS ports in an RS set (TCI-State).

[0058] - tci-PresentInDCI: indicates whether the TCI field in the DCI is included or not.

[0059] - pdcch-DMRS-ScramblingID: indicates the information used to initialize the PDCCH DMRS scrambling sequence.

[0060] For PDCCH reception, the UE monitors a set of PDCCH candidates in the CORESET (e.g., blind decoding). The PDCCH candidates indicate the CCEs that the UE monitors for PDCCH reception / detection. PDCCH monitoring is performed in one or more CORESETs on an active DL BWP on each activated cell where PDCCH monitoring is configured. The set of PDCCH candidates that the UE monitors is defined as a PDCCH Search Space (SS) set. The SS set is a Common Search Space (CSS) set or a UE-specific Search Space (USS) set.

[0061] Table 6 illustrates the PDCCH search space.

[0062] [Table 6]

[0063] The SS set is configured by system information (e.g., MIB) or UE-specific higher layer (e.g., RRC) signaling. S (e.g., 10) or less SS sets are configured in each DL BWP of the serving cell. For example, the following parameters / information are provided for each SS set: Each SS set is associated with one CORESET, and each CORESET configuration is associated with one or more SS sets.

[0064] - searchSpaceId: Indicates the ID of the SS set.

[0065] - controlResourceSetId: Indicates the CORESET associated with the SS set.

[0066] - monitoringSlotPeriodicityAndOffset: indicates the PDCCH monitoring periodicity period (in slot units) and the PDCCH monitoring period offset (in slot units).

[0067] - monitoringSymbolsWithinSlot: indicates the first OFDMA symbol for PDCCH monitoring in a slot where PDCCH monitoring is configured. It is indicated by a bitmap, where each bit corresponds to each OFDMA symbol in the slot. The MSB of the bitmap corresponds to the first OFDMA symbol in the slot. The OFDMA symbol corresponding to a bit whose bit value is 1 corresponds to the first symbol of the CORESET in the slot.

[0068] - nrofCandidates: indicates the number of PDCCH candidates for AL={1, 2, 4, 8, 16} (e.g., one of 0, 1, 2, 3, 4, 5, 6, 8).

[0069] - searchSpaceType: indicates whether the SS type is CSS or USS.

[0070] - DCI Format: Indicates the DCI format of the PDCCH candidate.

[0071] Based on the CORESET / SS set configuration, the terminal can monitor PDCCH candidates in one or more SS sets in a slot. An occasion (e.g., a time / frequency resource) for monitoring PDCCH candidates is defined as a PDCCH (monitoring) opportunity. One or more PDCCH (monitoring) opportunities are configured in a slot.

[0072] 1. Multi-slot PDCCH monitoring

[0073] The above contents may be applied in combination with the method proposed in the present invention described below, or may be supplemented to clarify the technical features of the method proposed in the present invention.

[0074] In addition, the method described below can be similarly applied to the aforementioned NR system (licensed band) or shared spectrum, and it goes without saying that the technical ideas proposed in the present invention can be embodied in the relevant systems and can be modified or replaced according to the terms, expressions, structures, etc. defined in each system.

[0075] The NR system supports multiple neurologies (or subcarrier spacing, SCS) to support various 5G services. For example, when the SCS is 15 kHz, it supports a wide area in the traditional cellular band, when the SCS is 30 kHz / 60 kHz, it supports dense urban areas, lower latency, and wider carrier bandwidth, and when the SCS is 60 kHz or higher, it supports bands above 24.25 GHz. Until Release 16, the NR frequency bands are defined into two types of frequency ranges (FR1 and FR2) and are configured as shown in Table 3. In addition, discussions are underway to support the NR system in the frequency bands defined by FR1 / FR2 or higher (e.g., 52.6 GHz to 71 GHz).

[0076] A frequency band higher than the FR1 and FR2 bands (for example, 52.6 GHz to 114.25 GHz band, particularly 52.6 GHz to 71 GHz) is referred to as FR2-2. The waveform, SCS, CP length, timing, and the like defined for FR1 and FR2 in conventional NR systems do not need to be applied to FR2-2.

[0077] In the band above 52.6 GHz, SCSs of 120 kHz, 480 kHz, and 960 kHz are used for NR operation. In the case of 480 kHz and 960 kHz SCS, the length of the OFDM symbol is shorter than that of 120 kHz (for example, 1 / 4 times for 480 kHz and 1 / 8 times for 960 kHz), and this symbol length and slot length are burdensome for a terminal to perform PDCCH monitoring for each slot. In addition, the introduction of multi-slot PDCCH monitoring is planned for the effect of power saving. In this invention, a method for reducing the PDCCH monitoring burden of a terminal in such a situation and / or an operation / setting method to be considered for multi-slot PDCCH monitoring are proposed.

[0078] 1.1. Slot configuration / indication method including PDCCH monitoring occasions for Type 0-PDCCH CSS set for the first configuration (SS / PBCH block and CORESET multiplexing pattern 1)

[0079] During cell search, when a User Equipment (UE) receives a CORESET indication for Type0-PDCCH CSS set via a master information block (MIB), the UE determines related information including the number of RBs and the number of symbols of CORESET and PDCCH monitoring opportunities according to controlResourceSetZero, searchSpaceZero of pdcch-ConfigSIB1, which is an RRC information element (IE), and related tables in 3GPP TS 38.213. According to 13 of 3GPP TS 38.213, the SS / PBCH block (hereinafter, SSB) and CORESET multiplexing pattern are set to one of patterns 1 to 3 according to Tables 13-1 to 13-10C. When the SS / PBCH block and CORESET multiplexing pattern is SS / PBCH block and CORESET multiplexing pattern 1 (hereinafter, pattern 1), the PDCCH MO (monitoring occasion) is determined to be a configurable pattern using an offset O and a step index M.

[0080] Moreover, the MOs are located in two consecutive slots (i.e., slot index n0 and index n0+1) for each SSB index i, and are determined by the following formula:

[0081]

number

[0082] μ denotes the neurology for PDCCH reception in CORESET. N^frame, μ_slot are the number of slots per frame for SCS configuration μ. O and M are determined based on Tables 13-11 to 13-12A of 3GPP TS 38.213. The operation in 1.1 is performed in both licensed band (operation without shared spectrum) and / or unlicensed band (operation with shared spectrum).

[0083] SS / PBCH block and CORESET multiplexing pattern 2 (hereinafter, pattern 2) and SS / PBCH block and CORESET multiplexing pattern 3 (hereinafter, pattern 3) do not have to follow the operation proposed in this specification.

[0084] Meanwhile, NR, which operates in the 52.6 GHz band or higher, is expected to introduce 120 kHz, 480 kHz, and 960 kHz SCS for control / data channels including PDCCH. In the case of a large SCS (e.g., 480 kHz, 960 kHz), the symbol and slot lengths are short, so the UE's operation of continuously monitoring two slots becomes burdensome. Therefore, instead of performing PDCCH monitoring in two consecutive slots as in the conventional method, the UE performs PDCCH monitoring for each SSB index in two consecutive slot-groups as in the method 1.1-1 below.

[0085] 1.1-1. Method for determining Type 0-PDCCH monitoring slots

[0086] A slot-group including a number of consecutive slots is defined. Type 0-PDCCH monitoring is performed in the first slot of two consecutive slot groups. A slot-group includes G consecutive slots starting from slot n0. G is determined for each slot group by the pneumatics of SSB and / or CORESET, respectively. Alternatively, G is set and / or indicated to the terminal via MIB or SIB1. A default value of G is pre-defined by the pneumatics of SSB and / or CORESET. For example, if the SCS of CORESET is 120 kHz, G=1 is determined, and if the SCS is 480 kHz or 960 kHz, G=4 is determined. Alternatively, in order to make the length of the slot-group the same as the slot length of the 120 kHz SCS, G=4 is determined, and if the SCS is 480 kHz, G=8 is determined. If the G value set / indicated from MIB or SIB1 cannot be used (e.g., initial connection), the default value is used. After receiving MIB or SIB1, the G value is updated from the base value to the value indicated by MIB or SIB1.

[0087] A slot-group can be understood as a virtual concept indicating consecutive slots. In other words, the value G is equal to the interval of slots at which Type 0-PDCCH monitoring is performed. For example, the indices of Type 0-PDCCH monitoring slots are n0 and n0+G. Thus, when the SCS is 480 kHz (μ=5), the indices of Type 0-PDCCH monitoring slots are n0 and n0+4. When the SCS is 960 kHz (μ=6), the indices of Type 0-PDCCH monitoring slots are n0 and n0+8. Depending on the UE's capabilities, monitoring is performed per unit time (e.g., group of slots). Since a maximum number of monitored PDCCH candidates per unit time (e.g., group of slots) for a single serving cell and a maximum number of non-overlapped CCEs per unit time (e.g., group of slots for a single serving cell) are set, the terminal can perform PDCCH monitoring without burden (e.g., without exceeding the maximum number of PDCCH candidates and / or the maximum number of CCEs) only after a monitoring interval of G is maintained.

[0088] 1.2. How to define MO span for multi-slot PDCCH monitoring

[0089] Multi-slot PDCCH monitoring refers to an operation of determining BD (Blind Decoding) / CCE limits based on and / or in units of multiple consecutive slots and performing PDCCH monitoring. In conventional NR rel-15, BD / CCE limits are determined in units of one slot. In NR rel-16, BD / CCE limits are determined in units of spans (in this case, consecutive symbols) confined within one slot, and then PDCCH monitoring is performed. The BD / CCE limits refer to "Maximum number of monitored PDCCH candidates for a DL BWP with SCS configuration for a single serving cell" and "Maximum number of non-overlapped CCEs for a DL BWP with SCS configuration for a single serving cell" described in the 3GPP Technical Specification. In conventional NR rel-15 / 16, a span is defined by consecutive PDCCH MOs (monitoring occasions), and the span is in the form of consecutive symbols in a slot.

[0090] Meanwhile, in order to avoid too frequent PDCCH monitoring operations due to the short symbol and slot length in the 52.6 GHz and higher bands, multiple PDCCH monitoring is introduced as described in 1.1. For such purpose, it is necessary to define the PDCCH monitoring span in slot units (multiple slot units).

[0091] 1.2-1. Slot-by-slot span definition for multi-slot PDCCH monitoring

[0092] A PDCCH monitoring span is defined as a group of (consecutive) slots that includes at least one PDCCH MO. That is, the proposed slot-unit span is in the form of consecutive slots, and each slot has at least one MO. More specific characteristics of the slot-unit span can be described by the following two cases of multi-slot PDCCH monitoring operation modes, respectively.

[0093] [Table 7]

[0094] 1.2-1-1. Span in Case 1

[0095] The explanation of 1.2-1-1 is limited to the case where the unit of Y is a slot in case 1. A span is defined by Y consecutive slots. BD / CCE restrictions are determined by span units. At least one span is included in X slot. The slot containing the lowest index MO among the PDCCH MOs in X slot is the start slot of the first span, and the span is determined by consecutive slots for the span duration. The next span starts from the slot containing the lowest index MO not contained in the previous span. For multiple spans present in X slot, the span duration may be determined in the same manner or without any particular restriction. All spans do not overlap with each other and do not cross the boundary of the X slot. The (minimum) interval between adjacent spans is set semi-statically by RRC signaling, etc.

[0096] 1.2-1-2. Span in Case 2

[0097] The explanation in 1.2-1-2 applies only to the case where the unit of Y is slot in case 2. A span is defined as Y consecutive slots. BD / CCE limits are determined in span units. At most one span is included for every X slots. X means the minimum slot offset between two adjacent spans (i.e., the interval between the first slots in the two spans), and Y means the maximum duration of a span (i.e., the maximum number of slots).

[0098] In the following, in 1.3 and 1.4, various setting / instruction methods for the base station / terminal in the situation of case 1 and case 2, respectively, will be described.

[0099] Case 1

[0100] 1.3.1. X Slot Group

[0101] 1.3.1.1. The start of the X slot group in each UE may be determined in one of the following ways:

[0102] 1.3.1.1.1. How to determine the start of an X-slot group using the system frame number (SFN)

[0103] 1.3.1.1.1.1. The point where SFN modulo c=0 is set as the start point of the X slot group. c is set semi-statically by RRC signaling, etc. Also, a default c value is predefined for each SCS. For example, in the case of a 960 kHz SCS, the default value of c is 8.

[0104] A point where SFN=d is determined as the start point of X slots, and a slot group is set at intervals of X consecutive slots. d is semi-statically set by RRC signaling, etc. Also, a basic d value is predefined for each SCS. For example, d=0 is predefined for a specific SCS.

[0105] 1.3.1.1.2. The slot groups for 480 kHz and 960 kHz SCS are implicitly determined by the X setting.

[0106] - For 480kHz SCS, if X=4, it will align with the slot of 120kHz SCS

[0107] - For 480kHz SCS, if X=2, it aligns with a half-slot (7 symbols) of 120kHz SCS

[0108] - For 960kHz SCS, if X=8, it will align with the slot of 120kHz SCS

[0109] - For 960kHz SCS, if X=4, it will align with the slot of 480kHz SCS

[0110] - For 960kHz SCS, if X=2, it aligns with a half-slot (7 symbols) of 480kHz SCS

[0111] 1.3.1.1.3. For the methods described in "1.3.1.1.1" and "1.3.1.1.2", if a different offset is set in each UE, the starting points of the X slot groups for each UE are distributed.

[0112] 1.3.2. How to determine the Y size, position in the X slot group, and number of each UE

[0113] 1.3.2.1. Determine the position and size of Y in slot-by-slot or symbol-by-symbol pattern (bitmap).

[0114] 1.3.2.1.1. If Y is per-slot, set Y in the per-slot bitmap

[0115] For example, if slot group X is configured with 8 slots of 960 kHz SCS, to set slots with indexes 1 and 2 to Y, the bitmap is configured as 01100000. This bitmap may be semi-statically configured by higher layer signaling such as RRC, or dynamically configured by DCI, etc.

[0116] 1.3.2.1.2. If Y is symbol-wise, set Y in the symbol-wise bitmap

[0117] :: For example, when slot group X is configured with two slots of 480 kHz SCS, in order to set symbols with indexes 0, 1, 14, and 15 to Y, the bitmap is configured as 110000000000000_110000000000000. This bitmap may be semi-statically configured by higher layer signaling such as RRC, or dynamically configured by DCI, etc.

[0118] 1.3.2.2. How to restrict the spacing between adjacent Ys

[0119] 1.3.2.2.1. When there are two or more Ys in an X slot group (Y is a slot unit)

[0120] - For any two adjacent Y's, the minimum spacing between the first slot of the previous Y and the first slot of the next Y is set to k slots.

[0121] Or, for two adjacent Y's, the minimum distance between the last slot of the previous Y and the first slot of the next Y is set to k slots.

[0122] - There are no restrictions on the size and position of Y as long as the minimum spacing is maintained.

[0123] - k is semi-statically configured by higher layer signaling such as RRC.

[0124] 1.3.2.2.2. If there is only one Y in an X slot group (Y is a slot unit)

[0125] - For any two adjacent Y's, the minimum distance between the first slot of the previous Y and the first slot of the next Y is set to XY slots.

[0126] - For any two adjacent Y's, the minimum distance between the last slot of the previous Y and the first slot of the next Y is set to XY slots.

[0127] - There are no restrictions on the size and position of Y as long as the minimum spacing is maintained.

[0128] 1.3.2.2.3. When there are two or more Ys in an X slot group (Y is a symbol unit)

[0129] - For any two adjacent Y's, the minimum spacing between the first symbol of the previous Y and the first symbol of the next Y is set to k symbols.

[0130] - For any two adjacent Y's, the minimum spacing between the last symbol of the previous Y and the first symbol of the next Y is set to k symbols.

[0131] - There are no restrictions on the size and position of Y as long as the minimum spacing is maintained.

[0132] - k is semi-statically configured by higher layer signaling such as RRC.

[0133] 1.3.2.2.4. If there is only one Y in an X slot group (Y is a symbol unit)

[0134] - For any two adjacent Y's, the minimum spacing between the first symbol of the previous Y and the first symbol of the next Y is set to (14*XY) symbols.

[0135] - For any two adjacent Y's, the minimum spacing between the last symbol of the previous Y and the first symbol of the next Y is set to (14*XY) symbols.

[0136] - There are no restrictions on the size and position of Y as long as the minimum spacing is maintained.

[0137] 1.3.2.3. How to set consecutive Y slots starting from the reference slot (ref-slot) in an X slot group

[0138] 1.3.2.3.1 The reference slot is set by RRC signaling. If the reference slot is not set by the base station, the reference slot of the terminal is the first slot.

[0139] If Y size is 1, Y is set at the reference slot. If Y size=k, Y is set at k consecutive slots starting from the reference slot.

[0140] However, in order to secure the PDCCH decoding time, the size of Y is set so that XY is less than a predetermined number c, where the predetermined number c is predefined in each SCS or set by RRC signaling.

[0141] The base slot may be a single slot at a fixed position, or may be two or more consecutive slots. For example, if the base slots are two consecutive slots, the Y size may only be set to multiples of 2.

[0142] 1.3.2.4. How to increase / decrease Y size based on DCI or Timer

[0143] 1.3.2.4.1. In each SCS, the basic size of Y (e.g., Y=8 for 960 kHz) is defined, and the size of Y is changed from the basic size to another size by DCI or a timer. The reference slot of 1.3.2.3 is set to the basic size. Or, conversely, the basic size is set to the size of the reference slot.

[0144] 1.3.2.4.2. The size of Y possible in each SCS is set by RRC signaling, and the size of Y is changed by DCI trigger.

[0145] 1.3.2.4.3. If a timer starts when the size of Y is not the base size, then when the timer expires, the size of Y falls back to the base size.

[0146] 1.3.3. How to set X and Y for CSS separately from USS

[0147] 1.3.3.1. Set X slot group start for CSS different from USS

[0148] :: The start point of the X slot group for CSS is fixed at slot_index modulo X=0, and the start point of the X slot group for USS is set separately for each UE.

[0149] :: The starting point of the X slot group for USS is set by method 1.1-1.

[0150] 1.3.3.2. Setting Y slot (or symbol) position / size for CSS differently than USS

[0151] :: The CSS Y size and the USS Y size are set to be different from each other.

[0152] :: Or the CSS and USS Y sizes are the same but the positions are set differently.

[0153] :: CSS and USS position / size are set by the methods in 1.2.

[0154] 1.3.3.3. How to configure CSS only Y or USS only Y

[0155] :: Y (Yc) that can be set only by CSS and / or Y (Yu) that can be set only by USS are predefined.

[0156] In this case, the span gap and span duration for Yc and Yu are set independently.

[0157] :: Y (CSS+USS Y), in which CSS and USS can be set simultaneously, is also defined.

[0158] For example, for one UE, a specific Y is set to USS only Y, and another specific Y is set to CSS+USS Y, CSS only Y, or USS only Y.

[0159] 1.3.4. BD / CCE handling and overbooking / dropping rules

[0160] In the method described below, BD / CCE capabilities and / or limitations refer to BDs (maximum number of monitored PDCCH candidates) and CCEs (maximum number of non-overlapped CCEs) that can be set by a base station / terminal, and are set for each SCS.

[0161] - The BD / CCE processing method described below is applicable to multiple slots and / or symbols belonging to a BD / CCE unit (consisting of one or more slots or symbols, hereinafter referred to as a BD / CCE unit) to which BD / CCE capabilities and / or restrictions apply, when the unit is defined and / or set.

[0162] - According to the BD / CCE processing method described below, if the number of PDCCH candidates configured and / or instructed for the UE to monitor is greater than the capability and / or limitation set for the corresponding BD / CCE unit (overbooking), the UE drops monitoring of PDCCH candidates in some slots and / or symbols (or associated with some SS sets) according to a specified criterion (does not perform blind detection / decoding), thereby ensuring the BD / CCE capability set for the corresponding BD / CCE unit.

[0163] - In the BD / CCE processing method described below, the process of checking overbooking in the corresponding BD / CCE unit is called BD / CCE check. If the UE is not overbooked in the BD / CCE check, the UE does not drop monitoring for all PDCCH candidates included in the checked unit / range (slot or symbol or SS set index). If the UE is overbooked as a result of the BD / CCE check, the UE drops monitoring for PDCCH candidates according to specific criteria, and this process is called BD / CCE drop.

[0164] 1.3.4.1. If a slot group is defined by multiple consecutive X slots, when the slot group is configured in BD / CCE units, the UE performs BD / CCE processing operations in one of the following ways:

[0165] 1.3.4.1.1. BD / CCE check is performed on a slot group basis, and if the check results in the UE being overbooked, the UE performs BD / CCE dropping in descending order of slot, symbol and / or SS set index.

[0166] 1.3.4.1.2. A BD / CCE check is performed for each slot and / or symbol included in the slot group, and if the check shows that the UE is overbooked, the UE performs BD / CCE drop for the corresponding slot and / or symbol.

[0167] - The UE starts with the BD / CCE check for the slot and / or symbol with the lowest index, and then repeats the BD / CCE check while increasing the index (i.e., the BD / CCE check is performed in sequence from the first slot to the last slot).

[0168] - The UE starts with the BD / CCE check for the slot and / or symbol with the highest index, and then repeats the BD / CCE check while decreasing the index (i.e., the BD / CCE check is performed in sequence from the last slot to the first slot).

[0169] 1.3.4.1.3. BD / CCE check is performed for each SS set included in the slot group, and if the check shows that the UE is overbooked, the UE performs BD / CCE dropping in order of the largest SS set index.

[0170] 1.3.4.1.4. If a BD / CCE check is performed on a slot group basis, and the check shows that the UE is overbooked, the UE performs BD / CCE dropping in order of the largest SS set index for each slot and / or symbol.

[0171] :: For example, if a slot group consists of two slots, if the BD / CCE check results in the UE being overbooked, the UE performs BD / CCE dropping by dropping the SS set with the highest index in the first slot, then dropping the SS set with the highest index in the second slot, then dropping the SS set with the second highest index in the first slot, and then dropping the SS set with the second highest index in the second slot.

[0172] In this specification, an expression indicating an order such as the first slot, the second slot, etc. may mean any slot among multiple slots, and may be used as an expression indicating an order in the time domain among multiple slots. For example, the expression "the first slot of 8 X slots" may mean any one slot among the 8 X slots, or may mean the slot that is the most preceding in the time domain among the 8 X slots.

[0173] 1.3.4.2. Slot group Y Slots are set in BD / CCE units, and the terminal performs BD / CCE checks in the set units.

[0174] 1.3.4.2.1. If the Y size is not fixed, the BD / CCE limit in the Y slot is set as an integer multiple of the per-slot BD / CCE limit (e.g., the number of Y slots). Alternatively, the BD / CCE limit is set based on the maximum size of Y, and then the BD / CCE limit is changed to match the Y size set for the maximum size (e.g., 1 / 2 times, 1 / 4 times). Alternatively, the BD / CCE limit is set based on the size of the reference slot, and then the BD / CCE limit is changed to match the set Y size (e.g., 2 times, 1 / 2 times, etc.).

[0175] 1.3.4.2.2. If Y is Y consecutive slots starting from the reference slot, perform BD / CCE check from the reference slot.

[0176] 1.3.4.2.2.1. BD / CCE check is performed in slot index order. After the UE performs a BD / CCE check on the reference slot, it performs BD / CCE drop while continuing the BD / CCE check in slot index order. For example, if the reference slot is 1 slot, the BD / CCE check is performed in 1-slot units. If the reference slot is 2 slots, the BD / CCE check is performed in 2-slot units. The BD / CCE check for each reference slot means that after the BD / CCE check is performed on all SS sets included in the reference slot unit, the BD / CCE check is performed on all SS sets included in the next reference slot unit.

[0177] 1.3.4.2.2.2. BD / CCE checks are performed in the order of SS set indexes. The UE performs BD / CCE checks starting with the SS set with the lowest index that has MO set in the reference slot, and then continues BD / CCE checks in the order of SS set indexes. The BD / CCE check for each SS set index is performed for the entire Y slots.

[0178] If Y is any consecutive slot, the method described in 1.3.4.1 can be applied to the Y slots. In addition, the following method can be applied:

[0179] 1.3.4.2.3.1. The UE performs BD / CCE checks from the first m slots, then performs BD / CCE checks for the next m non-overlapping slots (in slot index order). When m>1, this method is useful when BD / CCE per slot is small. m=1.

[0180] 1.3.4.2.3.2. The UE performs BD / CCE checks starting from the last m slots, and then performs BD / CCE checks in the next m non-overlapping slots (i.e., in reverse slot index order). When m>1, this method is useful when BD / CCE per slot is small. m=1.

[0181] If the size of Y is fixed and does not change, the UE sets Z slots as a new BD / CCE unit and performs BD / CCE checks on Z slots starting from the slot with the lowest index (in index order). Alternatively, the UE may perform BD / CCE checks only on Z slots within Y slots and perform BD / CCE drops on all other slots. Z is set by RRC signaling to a value equal to or smaller than Y.

[0182] 1.3.4.3. For a BD / CCE unit in which CSS and USS are set simultaneously, the UE does not drop BD / CCE for CSS, but performs BD / CCE check and BD / CCE drop for USS only according to methods 1.3.4.1 to 1.3.4.2.

[0183] 1.3.4.4. For a BD / CCE unit in which CSS and USS are set simultaneously, the UE performs a BD / CCE check on the CSS with priority according to the methods in 1.3.4.1 to 1.3.4.2, then performs a BD / CCE check on the USS and performs BD / CCE drop.

[0184] 1.3.4.5. The CSS is set by the base station in the Y slot so as not to exceed the BD / CCE limit, and the UE operates with the expectation that the CSS is set by the base station in the Y slot so as not to exceed the BD / CCE limit.

[0185] Case 2

[0186] 1.4.1. How to specify a multi-slot group

[0187] 1.4.1.1. Z consecutive slots are configured as one multi-slot group.

[0188] 1.4.1.1.1. Z may be set to a value equal to or greater than X, may be set to a multiple of X, or may be set to the length of a subframe (or half-subframe). When the (X, Y) span is set in a repeating pattern, the multiple slot group corresponds to the period in which the span pattern is repeated. In this specification, (X, Y) does not refer to the supplementary explanation in parentheses, but refers to the combination of X and Y set in the terminal, such as (X, Y) in Table 7.

[0189] 1.4.1.1.2. Z is semi-statically set by higher layer signaling such as RRC

[0190] 1.4.1.1.3. The base values ​​for each of the 480kHz and 960kHz SCS are predefined (e.g., 480kHz: Z=4, 960kHz: Z=8).

[0191] 1.4.1.2. The start of a multiple slot group is set by one of the following methods:

[0192] A point where SFN modulo c=0 is set as the start point of a multiple slot group. c is set semi-statically by RRC signaling, etc. Also, a basic c value for each SCS is predefined.

[0193] 1.4.1.2.2. A point where SFN=d is set as the starting point of a multiple slot group, and multiple slot groups are set at intervals of Z consecutive slots. d is set semi-statically by signaling in RRC, etc. In addition, the basic d value of each SCS is predefined.

[0194] 1.4.1.2.3. Multiple slot groups are set at Z slot intervals from the start of a subframe (or half subframe).

[0195] 1.4.2. How to set X and Y for CSS separately from USS

[0196] 1.4.2.1. (X, Y) for CSS and (X, Y) for USS are set independently.

[0197] 1.4.2.1.1. The UE reports multiple (X,Y) for CSS and multiple (X,Y) for USS.

[0198] 1.4.2.2. Setting X for CSS different from USS

[0199] 1.4.2.2.1. By setting X for CSS larger or smaller than X for USS, the probability that CSS and USS are processed simultaneously in each UE is reduced.

[0200] 1.4.2.3. Setting Y (slot or symbol) duration for CSS different from USS

[0201] 1.4.2.3.1. By setting the Y interval for CSS larger or smaller than the Y interval for USS, the probability that CSS and USS are processed simultaneously in each UE is reduced.

[0202] 1.5. Setting the position of Y slot (=PDCCH monitoring slot) within X slot

[0203] The multi-slot PDCCH monitoring operation for 480 kHz and / or 960 kHz SCS introduced in the NR band above 52.6 GHz is represented by X slots and Y slots. The BD / CCE budget (or BD / CCE limit) of the multi-slot PDCCH monitoring is defined in units of X and / or Y consecutive slots. Also, the Y slots are a part of the X slots, and the PDCCH monitoring operation is not performed in the X slots that are not included in the Y slots.

[0204] For the efficiency of multi-slot PDCCH monitoring operation (e.g., power consumption of UE), it is necessary to appropriately set the position of Y slot within X slot. For example, Fig. 4 shows an example in which X is set to 4 slots and Y is set to 2 slots for 8 consecutive slots of 960 kHz SCS. In Fig. 4, Y slot is composed of 2 consecutive slots from the first slot among the 4 slots constituting each X slot.

[0205] As shown in FIG. 4, a UE with a Y slot position set does not monitor PDCCH in the third and fourth slots in the X slot, thereby reducing power consumption. However, if the Y slot position set in the UE is not fixed to a predetermined position in the X slot but is different for each X slot, unlike FIG. 4, the power consumption of the UE cannot be reduced. In addition, even if the Y slot position is fixed to the same position for all X slots, if Y is large as it approaches X, the effect of reducing the power consumption of the UE is reduced. For example, when Y is 3 slots, the UE needs to perform PDCCH monitoring operation in more slots than when Y is 2 slots. In addition, as shown in FIG. 5, even if different Y slot positions are set for each cell, carrier, and / or CC (component carrier) assigned to the UE, the period in which power consumption can be reduced is significantly reduced because the UE does not monitor PDCCH in the X slot.

[0206] In 1.5, a method for setting the position of the Y slot within the X slot in the multi-slot PDCCH monitoring operation for 480 kHz and 960 kHz SCS is proposed. In each method described later, the position of the Y slot may be the same or different in any X slot. In each method described later, the positions of the X slots for each cell, carrier and / or CC may be assumed to be aligned with each other in the time domain, but this is not necessarily limited to the application of the proposed method. In each method described later, the start positions of (at least) the X slots may be assumed to be aligned with each other for different SCSs or different X values, but this is not necessarily limited to the application of the proposed method.

[0207] 1.5-1. The first slot of Y slots is restricted so as not to be located behind a specific slot of X slots in the time domain. As an example of this, the position of the first slot of Y slots is restricted so as not to exceed X / 2-th slot. For example, when X is set to 8 slots for 960 kHz SCS (X slots are composed of {slot#n, slot#(n+1), ..., slot♯(n+7)}), the position of the first slot of Y slots is set so as not to exceed the 4th slot. Thus, the first slot of Y slots may be located in either the 1st or 4th slot of X slots, but the first slot of Y slots cannot be located in either the 5th or 6th slot of X slots. The position of the specific slot is predefined for each SCS and / or for each size of X, or is set by higher layer signaling such as RRC. In addition, the position of the specific slot is reported to the base station by the UE as UE capability for each SCS and / or for each size of X.

[0208] 1.5-2. The last slot of the Y slots is restricted so as not to be located later than a predetermined slot of the X slots in the time domain. As an example of this, the position of the last slot of the Y slots is restricted so as not to exceed X / 2-th slot. For example, when X is set to 8 slots for 960 kHz SCS (X slots are composed of {slot #n, slot #(n+1), ...., slot #(n+7)}), the position of the last slot of the Y slots is set so as not to exceed the 4th slot. For example, regardless of the position of the first slot of the Y slots, the last slot of the Y slots is set to either slot #n, slot #(n+1), slot #(n+2), or slot #(n+3). The position of the predetermined slot is predefined for each SCS and / or for each size of X, or is set by higher layer signaling such as RRC. In addition, the position of the predetermined slot is reported to the base station by the UE as UE capability for each SCS and / or for each size of X.

[0209] 1.5-3. The position of the last slot of the Y slots is restricted according to the position of the first slot of the Y slots. That is, if the first slot of the Y slots is slot#n, the last slot of the Y slots is restricted not to be located after slot#(n+M). In this case, slot#n may be the position of the first slot of the Y slots, or may mean a slot in which the first slot of the Y slots can be located. For example, when Y=1, Y can be located anywhere between slot#n and slot#(n+M). M is predefined for each SCS and / or for each size of X, or is set by higher layer signaling such as RRC. Also, M is reported by the UE to the base station as UE capability for each SCS and / or for each size of X. M may be predefined as X / 2 for 480 kHz and / or 960 kHz SCS. As an example of this, if the first slot of the Y slots is located at slot #n of the X slots, the last slot of the Y slots will be any one of slot #(n+1), slot #(n+2), ..., slot #(n+X / 2). The last slot of the Y slots cannot be slot #(n+X / 2+1) or any subsequent slot. For example, when X is set to 8 slots and M is set to X / 4 for 960 kHz SCS, if the first slot of the Y slots is the first slot of the X slots, the last slot of the Y slots will be the first, second or third slot of the X slots.

[0210] 1.5-4. When a UE has multiple cells, CCs, and / or carriers, the Y position for all CCs configured to the UE is restricted by any one of 1.5-1, 1.5-2, and 1.5-3 (or a combination of two or more). For multiple CCs configured to the UE, the worst (i.e., the last) Y position of each CC is restricted not to be located after a specific slot in the X slot. To illustrate 1.5-2, if the number of CCs for a specific UE is 3, X is 8 slots, and the position of the last slot of the Y slot is set to X / 2=4 regardless of the SCS, the position of the last slot of the Y slot for CC#1 cannot be located after the fourth slot, i.e., slot#3, among the eight slots that make up X. This restriction is similarly applied to CC#2 and CC#3. 1.5-4 can be applied even when the SCS settings are different for each CC, and is also used when setting the position of the Y slot within the X slot in conjunction with 1.5-5 described later.

[0211] 1.5-5. When two or more SCSs are configured for one UE, the range in which the position of Y for each SCS (or for each X configured for each SCS) can be configured is limited to have the same ratio within the X slot for each SCS. Even when different SCSs (and the slot intervals thereof) are mixed and X configured for each SCS is different, the positions of Y configured for each SCS (and each X configured for each SCS) are limited to overlap as much as possible. For example, when SCSs of 480 kHz and 960 kHz are configured for a specific UE, and X is configured to 4 slots for 480 kHz SCS and 8 slots for 960 kHz SCS, as shown in FIG. 6, the position of Y for 480 kHz SCS is limited to the first two slots of the corresponding X, and the position of Y for 960 kHz SCS is limited to the first four slots of the corresponding X.

[0212] As a result, the UE can expect reduced power consumption even in mixed SCS situations.

[0213] The method of 1.5-5 is also used when multiple cells, carriers, and / or CCs are configured with different SCSs. In 1.5-5, one of 1.5-1, 1.5-2, and 1.5-3 (or a combination of two or more) is used as the Y position restriction (or setting) for each SCS. The operation of 1.5-5 may be used in conjunction with the same Y position restriction (or setting) operation for multiple CCs, such as 1.5-4.

[0214] The operations of 1.5-1 to 1.5-5 are applied when determining the position of Y for each cell, carrier and / or CC, or for each SCS, or for each X, after the previous setting. Alternatively, the operations of 1.5-1 to 1.5-5 may be used as an additional restriction condition regardless of the setting of the position and / or size of Y for each carrier and / or CC, or for each SCS, or for each X. For example, even if X is set to 4 slots by the UE capability report and the network setting, and then Y is set to three consecutive slots from the first slot of X (i.e., Y is slot#n, slot#(n+1), slot#(n+2)), if a restriction condition that the last slot of Y is not set to the second slot or later of X is added by 1.5-2, the UE operates by regarding (assuming or setting) only slot#n and slot#(n+1) as Y slots, regardless of the setting of the base station.

[0215] 1.6. How to set X and Y slots

[0216] For multi-slot PDCCH monitoring operation for 480 kHz and / or 960 kHz SCS, when Y slot is configured within X slot, the position of Y (i.e., the first slot position or the last slot position), the size of Y (i.e., the number of consecutive slots from the first slot to the last slot), and the limiting method for Y of 1.5 are taken into consideration.

[0217] 1.6-1. If the value of X for the 480 kHz SCS (i.e., the number of slots in the X slot) is set as A, then the value of X for the 960 kHz SCS is set as 2*A. Or, conversely, if the value of X for the 960 kHz SCS is set as B, then the value of X for the 480 kHz SCS is set as B / 2.

[0218] 1.6-2. If the value of Y (i.e., the number of slots in the Y slot) for the 480 kHz SCS is set to C, then the value of Y for the 960 kHz SCS is set to 2*C. Or, conversely, if Y for the 960 kHz SCS is set to D, then Y for the 480 kHz SCS is set to D / 2.

[0219] The positions of the X slot and the Y slot are determined by any one or a combination of two or more of the operations described in 1.5 and 1.6.

[0220] Example

[0221] FIG. 7 is a flow chart illustrating a method for signal monitoring according to an embodiment of the present invention.

[0222] Referring to FIG. 7, an embodiment performed by a terminal (UE) includes the steps of setting an SS / PBCH block and CORESET multiplexing pattern (S701) and monitoring a PDCCH based on the pattern (S703).

[0223] The monitoring of the PDCCH is performed based on any one or more of the operations described in 1 above.

[0224] For example, according to 1.1, the SS / PBCH block and CORESET multiplexing pattern are set to pattern 1, and the PDCCH is monitored in the Type 0 PDCCH CSS set. The PDCCH is monitored in the first slot of two consecutive slot groups. If one slot group contains G consecutive slots, the interval between two slots containing PDCCH monitoring opportunities is G slot intervals, where G is 4 for 480 kHz SCS and 8 for 960 kHz SCS. Thus, the slot interval between two slots for monitoring Type 0 PDCCH is 4 slot interval for 480 kHz SCS and 8 slot interval for 960 kHz SCS.

[0225] The operation of 1.1 is performed in both licensed and / or unlicensed bands. Unlicensed bands are also called shared spectrum. When a terminal operating with shared spectrum channel access monitors a PDCCH (i.e., unlicensed band operation), the slot interval is set for a candidate SS / PBCH block. When a terminal not operating without shared spectrum channel access monitors a PDCCH (i.e., licensed band operation), the slot interval is set for a SS / PBCH block.

[0226] According to 1.2 to 1.6, PDCCH monitoring is performed by setting X slots and Y slots. According to Table 7, if consecutive X slots are a first slot group and consecutive Y slots are a second slot group, the first slot group is consecutive and non-overlapping. Also, one second slot group is included per first slot group. In 1 of this specification, the proposed multi-slot PDCCH monitoring is described based on the shortened symbol length in the case of 480 kHz and 960 kHz SCS, and the first slot group and the second slot group are set for 480 kHz and / or 960 kHz SCS.

[0227] According to 1.2-1, the first slot group and the second slot group include at least one PDCCH MO. Therefore, the PDCCH is monitored in at least one of the X slots included in the first slot group. Also, the PDCCH may be monitored in at least one of the Y slots included in the second slot group.

[0228] According to 1.3, X is configured for CSS and / or USS, so one of the two slots configured for the Type 0 PDCCH CSS set is included in the first slot group. According to 1.1, the two slots configured for the Type 0 PDCCH CSS set belong to different slot groups, so the two slots are included in each of the two first slot groups.

[0229] According to 1.3.3.1, the X slot is set for CSS and / or USS. If the SS set divided by the X slot is the first SS, the first SS set is the CSS or USS set. Also, according to 1.3.3.2 and 1.3.3.3, apart from the SS set restriction for the X slot, the Y slot is set for CSS and / or USS. If the SS set divided by the Y slot is the second SS set, the second SS set is the CSS or USS set.

[0230] Also, according to 1.3.2.2.2, when one Y (one second slot group) is included in an X slot group (first slot group), for two adjacent Ys (two second slot groups), the interval between the last slot of the previous Y (previous second slot group) and the first slot (start slot) of the next Y (next second slot group) is set to XY slots. Since the interval between the last slot of the previous second slot group and the start slot of the next second slot group among two adjacent second slots is XY slot interval, the interval between the start slot of the previous second slot group and the start slot of the next second slot group is X slot interval.

[0231] In addition to the operations described in relation to FIG. 7, any one or more of the operations described in FIGS. 1 to 3 and / or 1 above may be performed in combination.

[0232] An example of a communication system to which the present invention is applied

[0233] Without being limited thereto, the various descriptions, functions, procedures, suggestions, methods and / or flow charts of the present invention disclosed in this specification may be applied to various fields requiring wireless communication / connection between devices (e.g., 5G).

[0234] Hereinafter, a more detailed description will be given with reference to the drawings. In the following drawings / description, the same reference numerals denote the same or corresponding hardware blocks, software blocks or function blocks, unless otherwise specified.

[0235] FIG. 8 shows an example of a communication system 1 to which the present invention is applied.

[0236] Referring to FIG. 8, the communication system 1 applied to the present invention includes wireless devices, base stations, and networks. Here, the wireless devices refer to devices that communicate using wireless connection technology (e.g., 5G NR, LTE), and are also referred to as communication / wireless / 5G devices. The wireless devices include, but are not limited to, a robot 100a, vehicles 100b-1, 100b-2, an XR (eXtended Reality) device 100c, a handheld device (Hand-held Device) 100d, a home appliance 100e, an IoT (Internet of Thing) device 100f, and an AI server / device 400. For example, the vehicles include vehicles equipped with wireless communication functions, autonomous vehicles, vehicles capable of inter-vehicle communication, and the like. Here, the vehicles include UAVs (Unmanned Aerial Vehicles) (e.g., drones). XR devices include Augmented Reality (AR) / Virtual Reality (VR) / Mixed Reality (MR) devices, and are embodied in the form of Head-Mounted Devices (HMDs), Head-Up Displays (HUDs) mounted on vehicles, TVs, smartphones, computers, wearable devices, home appliances, digital billboards, vehicles, robots, etc. Portable devices include smartphones, smart pads, wearable devices (e.g., smart watches, smart glasses), computers (e.g., notebook computers, etc.), etc. Home appliances include TVs, refrigerators, washing machines, etc. IoT devices include sensors, smart meters, etc. For example, base stations and networks may also be embodied as wireless devices, and a specific wireless device 200a may operate as a base station / network node for other wireless devices.

[0237] The wireless devices 100a to 100f are connected to a network 300 via a base station 200. AI (Artificial Intelligence) technology is applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f are connected to an AI server 400 via the network 300. The network 300 is configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. The wireless devices 100a to 100f can communicate with each other via the base station 200 / network 300, but can also communicate directly without going through the base station / network (e.g., sidelink communication). For example, the vehicles 100b-1 and 100b-2 can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to everything) communication). Also, an IoT device (e.g., a sensor) can directly communicate with another IoT device (e.g., a sensor) or another wireless device 100a to 100f.

[0238] Wireless communication / connections 150a, 150b, and 150c are performed between the wireless devices 100a to 100f / base stations 200 and the base stations 200. Here, the wireless communication / connections are performed by various wireless connection technologies such as uplink / downlink communication 150a and sidelink communication 150b (or D2D communication) and communication between base stations 150c (e.g., relay, IAB (Integrated Access Backhaul) (e.g., 5G NR). Through the wireless communication / connections 150a, 150b, and 150c, the wireless devices and base stations, and the base stations and base stations can transmit / receive wireless signals to each other. For example, the wireless communication / connections 150a, 150b, and 150c can transmit / receive signals via various physical channels. To this end, based on various proposals of the present invention, any one of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes is performed.

[0239] An example of a wireless device to which the present invention is applied

[0240] FIG. 9 shows an example of a wireless device to which the present invention can be applied.

[0241] 9, a first wireless device 100 and a second wireless device 200 transmit and receive wireless signals using various wireless connection technologies (e.g., LTE, NR). Here, {the first wireless device 100, the second wireless device 200} corresponds to {wireless devices 100a-100f, the base station 200} and / or {wireless devices 100a-100f, the wireless devices 100a-100f} in FIG.

[0242] The first wireless device 100 includes one or more processors 102 and one or more memories 104, and further includes one or more transceivers 106 and / or one or more antennas 108. The processor 102 is configured to control the memory 104 and / or the transceiver 106 to implement the descriptions, functions, procedures, suggestions, methods, and / or flowcharts disclosed herein. For example, the processor 102 processes information in the memory 104 to generate a first information / signal, and then transmits a wireless signal including the first information / signal via the transceiver 106. The processor 102 also receives a wireless signal including a second information / signal via the transceiver 106, and then stores information obtained from signal processing of the second information / signal in the memory 104. The memory 104 is coupled to the processor 102 and stores various information related to the operation of the processor 102. For example, the memory 104 stores software code including instructions for performing some or all of the processes controlled by the processor 102 or for performing the descriptions, functions, procedures, suggestions, methods, and / or flowcharts disclosed herein. Here, the processor 102 and memory 104 are part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver 106 is coupled to the processor 102 and transmits and / or receives wireless signals via one or more antennas 108. The transceiver 106 includes a transmitter and / or a receiver. The transceiver 106 may also be referred to as an RF (radio frequency) unit. In the present invention, a wireless device may also refer to a communication modem / circuit / chip.

[0243] The second wireless device 200 includes one or more processors 202 and one or more memories 204, and further includes one or more transceivers 206 and / or one or more antennas 208. The processor 202 is configured to control the memory 204 and / or the transceiver 206 to implement the descriptions, functions, procedures, suggestions, methods, and / or flowcharts disclosed herein. For example, the processor 202 processes information in the memory 204 to generate a third information / signal, and then transmits a wireless signal including the third information / signal via the transceiver 206. The processor 202 also receives a wireless signal including a fourth information / signal via the transceiver 206, and then stores information obtained from the signal processing of the fourth information / signal in the memory 204. The memory 204 is coupled to the processor 202 and stores various information related to the operation of the processor 202. For example, the memory 204 stores software code including instructions for performing some or all of the processes controlled by the processor 202 or for performing the descriptions, functions, procedures, suggestions, methods, and / or flowcharts disclosed herein. Here, the processor 202 and memory 204 are part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver 206 is coupled to the processor 202 and transmits and / or receives wireless signals via one or more antennas 208. The transceiver 206 includes a transmitter and / or a receiver. The transceiver 206 may also be referred to as an RF unit. In the present invention, a wireless device may also refer to a communication modem / circuit / chip.

[0244] The hardware elements of the wireless device 100, 200 are described in more detail below. One or more protocol layers may be implemented by one or more processors 102, 202, without limitation. For example, the one or more processors 102, 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). The one or more processors 102, 202 may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, suggestions, methods, and / or flowcharts disclosed herein. The one or more processors 102, 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods, and / or flowcharts disclosed herein. The one or more processors 102, 202 may generate and provide signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, suggestions, and / or methods disclosed herein to the one or more transceivers 106, 206. The one or more processors 102, 202 may receive signals (e.g., baseband signals) from the one or more transceivers 106, 206 and derive the PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed herein.

[0245] The one or more processors 102, 202 may also be referred to as a controller, microcontroller, microprocessor, or microcomputer. The one or more processors 102, 202 may be implemented using hardware, firmware, software, or a combination thereof. As an example, the one or more processors 102, 202 may include one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs). The descriptions, functions, procedures, suggestions, methods, and / or flowcharts disclosed herein may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, and the like. The firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods, and / or flowcharts disclosed herein may be included in the one or more processors 102, 202, or may be stored in one or more memories 104, 204 and run by the one or more processors 102, 202. The descriptions, functions, procedures, suggestions, methods and / or flow charts disclosed in this specification may be embodied using firmware or software in the form of code, instructions and / or sets of instructions.

[0246] The one or more memories 104, 204 may be coupled to the one or more processors 102, 202 and may store various forms of data, signals, messages, information, programs, code, instructions, and / or commands. The one or more memories 104, 204 may be comprised of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer readable storage media, and / or combinations thereof. The one or more memories 104, 204 may be located internal and / or external to the one or more processors 102, 202. Additionally, the one or more memories 104, 204 may be coupled to the one or more processors 102, 202 via various techniques, such as wired or wireless connections.

[0247] The one or more transceivers 106, 206 may transmit user data, control information, wireless signals / channels, etc., as described in the methods and / or flow charts, etc., herein to one or more other devices. The one or more transceivers 106, 206 may receive user data, control information, wireless signals / channels, etc., as described in the descriptions, functions, procedures, suggestions, methods and / or flow charts, etc., disclosed herein from one or more other devices. For example, the one or more transceivers 106, 206 may be coupled to one or more processors 102, 202 and may transmit and receive wireless signals. For example, the one or more processors 102, 202 may control the one or more transceivers 106, 206 to transmit user data, control information, or wireless signals to one or more other devices. Also, the one or more processors 102, 202 may control the one or more transceivers 106, 206 to receive user data, control information, or wireless signals from one or more other devices. Also, the one or more transceivers 106, 206 are coupled to one or more antennas 108, 208, and the one or more transceivers 106, 206 are configured to transmit and receive user data, control information, radio signals / channels, etc., as referred to in the descriptions, functions, procedures, suggestions, methods and / or flow charts disclosed herein, via the one or more antennas 108, 208. In this specification, the one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). The one or more transceivers 106, 206 convert the received user data, control information, radio signals / channels, etc., from RF band signals to baseband signals for processing by the one or more processors 102, 202. The one or more transceivers 106, 206 convert the user data, control information, radio signals / channels, etc., processed by the one or more processors 102, 202, from baseband signals to RF band signals. To this end, the one or more transceivers 106, 206 include (analog) oscillators and / or filters.

[0248] An example of the use of wireless devices to which the present invention is applied

[0249] 10 shows another example of a wireless device to which the present invention is applied. The wireless device may be embodied in various forms depending on the use case / service (see FIG. 8).

[0250] Referring to Fig. 10, the wireless device 100, 200 corresponds to the wireless device 100, 200 of Fig. 9 and is composed of various elements, components, units / parts and / or modules. For example, the wireless device 100, 200 includes a communication unit 110, a control unit 120, a memory unit 130 and an additional element 140. The communication unit includes a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 includes one or more processors 102, 202 and / or one or more memories 104, 204 in Fig. 9. For example, the transceiver 114 includes one or more transceivers 106, 206 and / or one or more antennas 108, 208 in Fig. 9. The control unit 120 is electrically connected to the communication unit 110, the memory unit 130 and the additional element 140 and controls the overall operation of the wireless device. For example, the control unit 120 controls electrical / mechanical operations of the wireless device based on the programs / codes / commands / information stored in the memory unit 130. In addition, the control unit 120 transmits information stored in the memory unit 130 to the outside (e.g., another communication device) via the communication unit 110 through a wireless / wired interface, or stores information received from the outside (e.g., another communication device) via the communication unit 110 through a wireless / wired interface in the memory unit 130.

[0251] The additional element 140 may be configured in various ways depending on the type of wireless device. For example, the additional element 140 may include any one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computer unit. The wireless device may be embodied in the form of, but not limited to, a robot (FIG. 8, 100a), a vehicle (FIG. 8, 100b-1, 100b-2), an XR device (FIG. 8, 100c), a mobile device (FIG. 8, 100d), a home appliance (FIG. 8, 100e), an IoT device (FIG. 8, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a Fintech device (or a financial device), a security device, a climate / environment device, an AI server / device (FIG. 8, 400), a base station (FIG. 8, 200), and a network node. The wireless device may be mobile or fixed depending on the use case / service.

[0252] In FIG. 10, the various elements, components, units / sections and / or modules within the wireless devices 100, 200 are all coupled to each other by wired interfaces or at least some are wirelessly coupled to each other by a communication unit 110. For example, in the wireless devices 100 and 200, the control unit 120 and the communication unit 110 are connected by wire, and the control unit 120 and a first unit (e.g., 130, 140) are connected wirelessly via the communication unit 110. In addition, each element, component, unit / part and / or module in the wireless devices 100 and 200 further includes one or more elements. For example, the control unit 120 is composed of a set of one or more processors. For example, the control unit 120 is composed of a set of a communication control processor, an application processor, an ECU (Electronic control Unit), a graphics processor, a memory control processor, etc. As another example, the memory unit 130 is composed of a Random Access Memory (RAM), a Dynamic RAM (DRAM), a Read Only Memory (ROM), a flash memory, a volatile memory, a non-volatile memory and / or a combination thereof.

[0253] An example of a vehicle or an autonomous vehicle to which the present invention is applied

[0254] 11 shows an example of a vehicle or an autonomous vehicle to which the present invention is applied. The vehicle or the autonomous vehicle may be realized as a mobile robot, a car, a train, an aerial vehicle (AV), a ship, or the like.

[0255] 11, a vehicle or autonomous vehicle 100 includes an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 is configured as a part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to blocks 110 / 130 / 140 in FIG. 10, respectively.

[0256] The communication unit 110 transmits and receives signals (e.g., data, control signals, etc.) to and from external devices such as other vehicles, base stations (e.g., base stations, road side units, etc.), and servers. The control unit 120 controls elements of the vehicle or autonomous vehicle 100 to perform various operations. The control unit 120 includes an ECU (Electronic Control Unit). The driving unit 140a causes the vehicle or autonomous vehicle 100 to run on the ground. The driving unit 140a includes an engine, a motor, a power train, wheels, brakes, a steering device, etc. The power supply unit 140b supplies power to the vehicle or autonomous vehicle 100 and includes wired / wireless charging circuits, a battery, etc. The sensor unit 140c can obtain vehicle status, surrounding environment information, user information, etc. The sensor unit 140c includes an IMU (inertial measurement unit) sensor, a collision sensor, a wheel sensor, a speed sensor, a tilt sensor, a weight sensor, a heading sensor, a position module, a vehicle forward / reverse sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, an illuminance sensor, a pedal position sensor, etc. The autonomous driving unit 140d embodies a technology for maintaining a lane while driving, a technology for automatically adjusting speed such as an adaptive cruise control, a technology for automatically driving according to a predetermined route, a technology for automatically setting a route when a destination is set, and the like.

[0257] For example, the communication unit 110 receives map data, traffic information data, etc. from an external server. The autonomous driving unit 140d generates an autonomous driving route and a drive plan based on the obtained data. The control unit 120 controls the driving unit 140a (e.g., speed / direction adjustment) so that the vehicle or autonomous driving vehicle 100 moves along the autonomous driving route according to the drive plan. The communication unit 110 non-periodically obtains the latest traffic information data from an external server during autonomous driving, and also obtains surrounding traffic information data from surrounding vehicles. In addition, the sensor unit 140c obtains vehicle status and surrounding environment information during autonomous driving. The autonomous driving unit 140d updates the autonomous driving route and the drive plan based on the newly obtained data / information. The communication unit 110 transmits information regarding the vehicle position, the autonomous driving route, the drive plan, etc. to the external server. The external server can predict traffic information data in advance using AI technology, etc. based on information collected from the vehicle or autonomous driving vehicle, and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0258] It is obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the characteristics of the present invention. Therefore, the above detailed description should not be interpreted as limiting in all respects, but should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. [Industrial Applicability]

[0259] As described above, the present invention can be applied to a variety of wireless communication systems.

Claims

1. A method for a terminal (UE) monitoring a control signal in a wireless communication system, comprising: Setting the synchronization signals and physical broadcast channel (SS / PBCH) block and the control resource set (CORESET) multiplexing pattern to pattern 1; and monitoring a type 0 physical downlink control channel (PDCCH) common search space (CSS) set on two slots based on the pattern 1; one of the two slots for the Type 0 PDCCH CSS set is included in a first slot group consisting of X consecutive slots; In one of the X slots, a PDCCH in a first search space (SS) set is monitored; The first slot group includes a second slot group consisting of Y consecutive slots for monitoring a PDCCH in a second SS set; The slot spacing between the two slots is 4 slots based on a 480 kHz subcarrier spacing (SCS) and 8 slots based on a 960 kHz SCS.

2. The method of claim 1 , wherein the slot spacing is set for a candidate SS / PBCH block based on shared spectrum channel access activity.

3. The method of claim 1 , wherein the slot spacing is configured for an SS / PBCH block based on the terminal monitoring the PDCCH without a shared spectrum channel connection.

4. The method of claim 1 , wherein the first SS set is a CSS set.

5. The monitoring is performed based on a plurality of first slot groups including the first slot group and a plurality of second slot groups including the second slot group for the 480 kHz SCS or the 960 kHz SCS; The method of claim 1 , wherein one of the second groups of slots is included for each of the first groups of slots.

6. The method of claim 5 , wherein the interval between the starting slots of two adjacent second slot groups of the plurality of second slot groups is X slot intervals.

7. The method of claim 1 , wherein a PDCCH in the second SS set is monitored in one of the Y slots.

8. The method of claim 7 , wherein the second SS set is a CSS set.

9. The method of claim 7, wherein the second SS set is a UE-specific search space (USS) set.

10. 1. A terminal for monitoring signals in a wireless communication system, comprising: at least one transceiver; At least one processor; and at least one memory operatively connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations; The operation includes: Setting the synchronization signals and physical broadcast channel (SS / PBCH) block and the control resource set (CORESET) multiplexing pattern to pattern 1; and monitoring a type 0 physical downlink control channel (PDCCH) common search space (CSS) set on two slots based on the pattern 1; one of the two slots for the Type 0 PDCCH CSS set is included in a first slot group consisting of X consecutive slots; In one of the X slots, a PDCCH in a first search space (SS) set is monitored; The first slot group includes a second slot group consisting of Y consecutive slots for monitoring a PDCCH in a second SS set; The slot interval between the two slots is 4 slots based on a 480 kHz SCS (subcarrier spacing) and 8 slots based on a 960 kHz SCS.

11. An apparatus for a terminal, comprising: At least one processor; and at least one computer memory operatively connected to the at least one processor and which, when executed, causes the at least one processor to perform operations; The operation includes: Setting the synchronization signals and physical broadcast channel (SS / PBCH) block and the control resource set (CORESET) multiplexing pattern to pattern 1; and monitoring a type 0 physical downlink control channel (PDCCH) common search space (CSS) set on two slots based on the pattern 1; one of the two slots for the Type 0 PDCCH CSS set is included in a first slot group consisting of X consecutive slots; In one of the X slots, a PDCCH in a first search space (SS) set is monitored; The first slot group includes a second slot group consisting of Y consecutive slots for monitoring a PDCCH in a second SS set; The slot spacing between the two slots is 4 slots based on a 480 kHz subcarrier spacing (SCS) and 8 slots based on a 960 kHz SCS.

12. A computer-readable non-volatile storage medium containing at least one computer program causing at least one processor to perform operations, comprising: The operation includes: Setting the synchronization signals and physical broadcast channel (SS / PBCH) block and the control resource set (CORESET) multiplexing pattern to pattern 1; and monitoring a type 0 physical downlink control channel (PDCCH) common search space (CSS) set on two slots based on the pattern 1; one of the two slots for the Type 0 PDCCH CSS set is included in a first slot group consisting of X consecutive slots; In one of the X slots, a PDCCH in a first search space (SS) set is monitored; The first slot group includes a second slot group consisting of Y consecutive slots for monitoring a PDCCH in a second SS set; A storage medium, wherein the slot interval between the two slots is 4 slots based on a 480 kHz SCS (subcarrier spacing) and 8 slots based on a 960 kHz SCS.

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